diff --git a/plugins/ipmi/freeipmi b/plugins/ipmi/freeipmi
index f120cd1d..36d16aa5 100755
--- a/plugins/ipmi/freeipmi
+++ b/plugins/ipmi/freeipmi
@@ -137,7 +137,12 @@ foreach my $line (@data) {
 		label => $dataline[1]
 	       );
   $sensor{lwarn} = (defined($dataline[7]) and $dataline[7] ne "N/A") ? $dataline[7] : '';
-  $sensor{hwarn} = (defined($dataline[8]) and $dataline[8] ne "N/A") ? $dataline[8] : '';
+  # Ignore zeroes in high warning temperature thresholds since HP iLO2 returns "0.00" instead of "N/A".
+  if ( $dataline[2] eq "Temperature" and defined($dataline[8]) and $dataline[8] eq "0.00" ) {
+    $sensor{hwarn} = ''
+  } else {
+    $sensor{hwarn} = (defined($dataline[8]) and $dataline[8] ne "N/A") ? $dataline[8] : '';
+  }
 
   $sensor{lcrit} = (defined($dataline[6]) and $dataline[6] ne "N/A") ? $dataline[6] : '';
   $sensor{hcrit} = (defined($dataline[9]) and $dataline[9] ne "N/A") ? $dataline[9] : '';